Show subtitles or captions in QuickTime Player on Mac
If a movie has subtitles or captions, QuickTime Player can display them while the movie is playing. If the movie doesn’t have subtitles, you won’t see an option to view them.
Note: Captions need to be embedded using the CEA-608 format to allow the Closed Captioning option.
In the QuickTime Player app on your Mac, do any of the following: